java - Correct way to extend a hierarchy tree - Software

I have the following tree currently to be implemented in Java. My problems are the following: How can I go about addressing the fact Admin needs to have all tier 4 logic from both branches of th

Trees in Java, Java Program to Implement a Binary Tree

Class Hierarchy Tree Solution

Class Hierarchy Tree Solution

TreeMap In Java - Tutorial With Java TreeMap Examples

Inheritance Java - Code Reuse & Class Hierarchy

Let's be strong in Java OOPS Concepts

Tips and Tricks (JDT)

Java Map Interface: An Introductory Guide

Easily Build Powerful Interactive Data Visualizations Using D3 And JavaScript

Unity - Manual: Building Your First Tree

Collection in Java, Engineering Education (EngEd) Program

Types of Inheritance in Java - Javatpoint

9.5. Inheritance Hierarchies — AP CSAwesome

40.17.1 Call Hierarchy View